I downloaded the datasheet and think you have to configure the chip for 'no decode mode'. There's quite a few 'initial configuration' steps to take as well, but I assume that after that, if you send 0x01 to address 0xX1 then the top LED will turn on, though maybe it's the bottom LED.
If I had a module here I'd try it but sadly it doesn't have a 'hex decode' option where 0...F would be displayed. Now that's really silly to not have in my opinion.
Jay
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